72 lines
1.7 KiB
Go
72 lines
1.7 KiB
Go
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//go:build example
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// +build example
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// Do not build by default.
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package main
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import (
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"fmt"
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"time"
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"gobot.io/x/gobot/v2"
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"gobot.io/x/gobot/v2/drivers/gpio"
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"gobot.io/x/gobot/v2/platforms/adaptors"
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"gobot.io/x/gobot/v2/platforms/nanopi"
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)
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// PWR NanoPi: 1, 17 (+3.3V, VCC); 2, 4 (+5V, VDD); 6, 9, 14, 20 (GND)
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// GPIO NanoPi: header pin 22 is input, pin 7 is normal output
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// Button: the input pin is wired with a button to GND, the internal pull up resistor is used
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// LED: the output pin is wired to the cathode of a LED, the anode is wired with a resistor (70-130Ohm for 20mA) to VCC
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// Expected behavior: LED is initially on, if button is pressed and released, the state changes
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func main() {
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const (
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buttonPin = "22"
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ledPin = "7"
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)
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a := nanopi.NewNeoAdaptor(adaptors.WithGpiosPullUp(buttonPin))
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button := gpio.NewButtonDriver(a, buttonPin, gpio.WithButtonPollInterval(50*time.Millisecond))
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led := gpio.NewLedDriver(a, ledPin)
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if err := led.On(); err != nil {
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fmt.Println(err)
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}
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work := func() {
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if err := button.On(gpio.Error, func(err interface{}) {
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fmt.Println("an error occurred:", err)
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}); err != nil {
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panic(err)
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}
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if err := button.On(gpio.ButtonPush, func(interface{}) {
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fmt.Println("button pressed")
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if err := led.On(); err != nil {
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fmt.Println(err)
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}
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}); err != nil {
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panic(err)
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}
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if err := button.On(gpio.ButtonRelease, func(interface{}) {
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fmt.Println("button released")
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if err := led.Off(); err != nil {
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fmt.Println(err)
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}
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}); err != nil {
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panic(err)
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}
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}
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robot := gobot.NewRobot("buttonBot",
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[]gobot.Connection{a},
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[]gobot.Device{button, led},
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work,
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)
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if err := robot.Start(); err != nil {
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panic(err)
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}
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}
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